Mark Identification

E=KMC

Serial Number

73303805

Filing Date

Apr 1, 1981

Registration Date

Mar 29, 1983

Trademark by

KERR-MCGEE CORPORATION

Classification Information

Material Treatment Services-Namely, Converting Ores to Ore Concentrates for Others, Converting Ore Concentrates to Solids and Gases for Others and Custom Manufacture of Lubricating Oils for Others

Treatment of Materials

Drilling of Oil and Gas Wells for Others, Designing Instruments for Use in Underground Installations for Others and Conducting Energy Research for Others

Computer and Scientific